The initial condition produced in the relativistic high-energy collisions and its evolution to quark-gluon plasma (QGP) is of prime importance to study the QCD matter in the extremum conditions. According to the color-glass condensate (CGC) effective theory, the collision of two nuclei at ultra-relativistic velocities results in strong longitudinal color electric and magnetic fields called Glasma[1]} which evolves according to classical Yang-Mills[2]} (CYM) equations. The typical lifetime of this pre-equilibrium Glasma phase is 0.2 -1 fm/c. Heavy quarks[3]}, [4]}, [5]}, [2]}, [7]}, namely, charm and beauty quarks, work as an excellent probe to study the early stages of high-energy collisions.
